Mary Childs Nerney was the Executive Secretary of the NAACP from 1912 to 1916. She was white, and often lost patience with the African-American people she was seeking to help.
She offered W.E.B. DuBois the chance to lead the campaign to ban The Birth of a Nation (1915), but he refused. Because of the lack of success in NAACP's actions to ban The Birth of a Nation, on April 17, 1915, Nerney wrote to NAACP Executive Committee member George Packard: "I am utterly disgusted with the situation in regard to The Birth of a Nation ... kindly remember that we have put six weeks of constant effort of this thing and have gotten nowhere."
References
Mary Childs Nerney Wikipedia(Text) CC BY-SA